A triangle has three internal angles, each one bounded by a pair of adjacent edges; the sum of angles of a triangle always equals a straight angle (180 degrees or π radians). The triangle is a plane figure …

Math Warehouse's popular online triangle calculator: Enter any valid combination of sides/angles (3 sides, 2 sides and an angle or 2 angle and a 1 side) , and our calculator will do the rest!

Find the missing sides of a triangle using the triangle side calculator.

A triangle is a three-sided polygon that has 3 angles, and 3 vertices. Learn the definition of triangles, their types, parts, properties using a variety of examples.

List of Triangle symbols with html entity, unicode number code. Learn how to make over 43 Triangle symbols of math, copy and paste text character.

Properties of a triangle help us to identify a triangle from a given set of figures easily and quickly. Learn about angle sum property, triangle inequality property, exterior angle theorem, etc with solved …

It is usual to name each vertex of a triangle with a single capital (upper-case) letter. The sides can be named with a single small (lower case) letter, and named after the opposite angle.